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USB audio sync

Question asked by Dave Williams on Dec 20, 2011
Latest reply on Oct 11, 2012 by Carlos Neri

I am developing what is essentially a USB soundcard using a K60 device. I am a little concerned about how to sync the USB packet rate from the PC through the K60 to the hardware codec connected to it with I2S. I have read that adaptive or aynchronous modes of the USB audio class are the way to go for low jitter and high quality reproduction.

 

Competitors' offerings contain a PLL which synchronises the 1ms SOF packets and the codec Master Clock. Does Kinetis have this functionality? If not, how would synchronisation be implemented?

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